30 ON THE GENERA UEOTHOE AND UEOTHOIDES. 



PLATE IV. 



A. Urothoe pulchella, $ . 



or. tr. Triturating organs in situ in the stomach. 



(jii. 1. First gnathopod. prp. 3. Third perseopod. 



gn. 2. Second gnathopod. p/p. A pair of pleopods. 



ur. 1, 2, 3. First, second, and third uropods respectively. 



T. Telson upturned, and consequently viewed from the underside. 



B. TJrotlioe norvegica. 



gn. 1. First gnathopod. pr^. 3. Third perseopod. 



gn. 2. Second gnathopod. jilj). A pair of pleopods. 



ur. 1, 2, 3. First, second, and third uropods respectively. 

 T. Telson. 



C. Urothoe brevicornis, $ . 



a.i. Lower antenna. l.s. Upper lip. 



ur. 1, 2, 3. First, second, and third uropods respectively, 

 T. Telson. 



